American Aldes Spring-Loaded Backdraft Dampers are available in sizes 4″, 5″, 6″, 7″, 8″, 10″, 12″, 14″ and 16″ and are sold in cases of six. In residential applications, backdraft dampers are a common solution to correct airflow direction and noise problems with bathroom and kitchen exhaust fans.


20-gauge galvanized steel housing
Aluminum spring-loaded butterfly damper blades
Damper seals against EDPM rubber gasket in closed position for minimal leakage
Gasket designed for use in temperatures from -22°F to 180°F
Require from 0.04 to 0.08 in. w.g. static pressue to begin to open
May be installed in any position
The 14″ and 16″ models require adjusting spring tension if used in vertical position, with airflow down
The entire assembly inserts into duct for simple installation
Exterior foam gaskets provide a tight seal against interior surface of duct